There are a few potential causes for your PS4’s extended storage not working. One is that your console is not properly configured to use the latest firmware. To check if your console is up to date, go to the PlayStation Store and click on the “Check for Updates” link. If you see an update available, install it and then try again. If you still cannot access your storage, it may be because there are some files in that folder that are not being stored correctly or because of a corrupted file. You can also try using another storage device or format your PS4’s hard drive if that has been helpful in the past.
